As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2569: POWER PLANT MESSAGE AFTER ROTATION FROM PDX. RETURNED TO FIELD. MAINTENANCE REMOVED AND INSTALLED SERVICEABLE NR 2 PCU IAW Q400 AMM TASK 61-20-11-000-801 AND TASK 61-20-11-400-801. OPS CHECK GOOD. NO MESSAGES NOTED. AIRCRAFT RETURNED TO SERVICE.